private void EqualButton_Click(object sender, RoutedEventArgs e)
{
double newNumber;
if (double.TryParse(resultLabel.Content.ToString(), out newNumber))
{
;
switch (selectedOperator)
{
case SelectedOperator.Addition:
{
result = SimpleMath.Add(lastNumber, newNumber);
}
break;
case SelectedOperator.Subtraction:
{
result = SimpleMath.Subtract(lastNumber, newNumber);
}
break;
case SelectedOperator.Multiplication:
{
result = SimpleMath.Multiply(lastNumber, newNumber);
}
break;
case SelectedOperator.Division:
{
result = SimpleMath.Divide(lastNumber, newNumber);
}
break;
default:
break;
}
resultLabel.Content = result.ToString();
lastNumber = result;
lastLabel.Content = "";
lastLabel.Content = lastNumber.ToString();
}
}